Elegant A line Straps Tulle Navy Blue Prom Dresses Formal Evening Dres PreppyDress Marlow White Navy Blue Military Uniform for Men (Size 39S) Dark Blue Tulle Sequin High Low Prom Dress, Blue Evening Dress US 4 Dark Blue Uniform: Tropical dinner dress blue, Navy enlisted men, ranks E 1 through E 6. Country: Unknown Stock Photo Alamy Service Dress Blue (Yankee) uniform was for "warm weather afternoon and early evening functions such as yachting parties." The uniform was formally phased out in 2011 : r navy Foraml Mermaid One Shoulder Royal Blue Satin Prom Dress Evening Dress